__________ such heavy pollution already, it may now be too late to clean up the river.
At the end of the eighteenth century, masks _________ completely.
We live in an age _________ more information is available with greater ease than ever before.
Before he volunteered to direct traffic, Timoteo _________ lots of jobs.
—I looked after a group of fifteen French children. —That _________ easy!
Let him _________ ; he is a man of _________ temper.